Air Temperature vs Water Temperature vs Wind Speed. When is it Safe to Swim? (2024)

There’s no single answer to this as it depends on a few factors:

Air Temperature vs Water Temperature vs Wind Speed. When is it Safe to Swim?

No matter what the air temperature, wind speed, or water temperature you should always wear your life jacket.

• Air temperature: Ideally, you want warm but not scorching air. Between 70 and 100 degrees Fahrenheit (21 to 37 degrees Celsius) is comfortable. Very hot air can lead to dehydration and sunburn.
• Water temperature: Comfortable water temperature depends on your activity. Generally, 78-86 degrees Fahrenheit (26-30 degrees Celsius) is pleasant for swimming. Colder water can lead to hypothermia, while hot water can cause overheating.
• Wind speed: Strong winds can make you feel colder, especially when getting out of the water. It can also create waves that make swimming more difficult or dangerous.  Be careful swimming from a boat in the wind.  The wind can quickly move your boat away from you faster than you can swim to retrieve it.
• Your individual tolerance: Some people are more sensitive to cold than others.

Here are some resources that can help you decide:

• The 120° Rule: This rule suggests wearing a wetsuit if the sum of the air and water temperature is 120°F (48°C) or lower.
• Lifesaving organizations: Many lifesaving organizations publish guidelines for safe swimming temperatures. You can find these online by searching for “[Lifesaving organization in your area] safe swimming temperatures”.

Remember, it’s always better to err on the side of caution. If you’re unsure about the conditions, it’s best to wait or swim for a shorter time.